Onyx.

Onyx is a kind of agate, of brown shadows, layer, marble, jelly,like kisel, yellow and white, as long time ago used,like ornamental stone, as of agate is weight different, agate is heavier, as balancing energy, removing abundant, calming, and reconciliation.Onyx is a stone for fighters, as giving for energy attending, care interests, strengthening on a lead positions, as till sureness. As for a talisman gives an energy of soul, fighting loneliness, rising mood, gives a love and  happiness, world, is  pleasant for surrenders, in India he is a success symbol and luck, care of empty fears, craziness, damages, magic, fire, dead accident, and on your life attack, care for memory, soul force, marry happiness, as clean with a fire. Not carry with avanturine, diamond, heliotrope, Hyacinth, ruby, chrysolite, chrysopraz, carry his on the middle finger, from inside side he must not manufactured.
As affecting on the plexus chakra As manipura, as depending from the colours affecting on the other chakras.Onyx is medic stone, psychic  stone, diseases removing, aches lowering, sharpening hear, as fighting stress, nerve system disorders, emotional balancing and self control, fighting depression, insomnia, fear horrors, rising male potency, improves hear, effectively in a curing heart, kidneys, strengthening memory, immunity, East medicine shows,that he removes from a person are diseases.
Relieving ache, if apply to ache side, and condition in meteo addiction persons, in often his carry is work improving all organism systems, as fighting obesity, drink a water infused of such stone.